BIOS for a board identified only as FMB-H61, which suggests an Intel H61 chipset desktop motherboard. The name gives no brand or revision, so compare the model printed on the PCB closely before use. The 4.5 MB RAR probably contains an image for a 4 MB SPI flash chip. Such dumps help revive boards with corrupted firmware via a CH341A or similar programmer. Read and keep the existing chip contents first and confirm the image size matches the chip capacity.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →